X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fodhcpd.git;a=blobdiff_plain;f=src%2Fdhcpv6-ia.c;h=3a12114544e780e4f783849731b106deae663097;hp=844dfd30b7d507d119c500b622e223a9b54e7057;hb=ec3320078c11474b8ea48225f330c15d9471e312;hpb=fba0952c18b46f9385f43d7f7be2592f076d8402

diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c
index 844dfd3..3a12114 100644
--- a/src/dhcpv6-ia.c
+++ b/src/dhcpv6-ia.c
@@ -933,6 +933,8 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 	char hostname[256];
 	size_t hostname_len = 0;
 	bool class_oro = false;
+	bool notonlink = false;
+
 	dhcpv6_for_each_option(start, end, otype, olen, odata) {
 		if (otype == DHCPV6_OPT_CLIENTID) {
 			clid_data = odata;
@@ -972,6 +974,7 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 	dhcpv6_for_each_option(start, end, otype, olen, odata) {
 		bool is_pd = (otype == DHCPV6_OPT_IA_PD);
 		bool is_na = (otype == DHCPV6_OPT_IA_NA);
+		bool ia_addr_present = false;
 		if (!is_pd && !is_na)
 			continue;
 
@@ -1024,6 +1027,7 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 				if (stype != DHCPV6_OPT_IA_ADDR || slen < sizeof(struct dhcpv6_ia_addr) - 4)
 					continue;
 
+				ia_addr_present = true;
 #ifdef DHCPV6_OPT_PREFIX_CLASS
 				uint8_t *xdata;
 				uint16_t xtype, xlen;
@@ -1178,10 +1182,11 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 				a->valid_until = now + 3600; // Block address for 1h
 				update_state = true;
 			}
-		} else if (hdr->msg_type == DHCPV6_MSG_CONFIRM) {
-			// Always send NOTONLINK for CONFIRM so that clients restart connection
+		} else if (hdr->msg_type == DHCPV6_MSG_CONFIRM && ia_addr_present) {
+			// Send NOTONLINK for CONFIRM with addr present so that clients restart connection
 			status = DHCPV6_STATUS_NOTONLINK;
 			ia_response_len = append_reply(buf, buflen, status, ia, a, iface, true);
+			notonlink = true;
 		}
 
 		buf += ia_response_len;
@@ -1189,13 +1194,14 @@ ssize_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface,
 		response_len += ia_response_len;
 	}
 
-	if (hdr->msg_type == DHCPV6_MSG_RELEASE && response_len + 6 < buflen) {
+	if ((hdr->msg_type == DHCPV6_MSG_RELEASE || hdr->msg_type == DHCPV6_MSG_DECLINE || notonlink) &&
+			response_len + 6 < buflen) {
 		buf[0] = 0;
 		buf[1] = DHCPV6_OPT_STATUS;
 		buf[2] = 0;
 		buf[3] = 2;
 		buf[4] = 0;
-		buf[5] = DHCPV6_STATUS_OK;
+		buf[5] = (notonlink) ? DHCPV6_STATUS_NOTONLINK : DHCPV6_STATUS_OK;
 		response_len += 6;
 	}